| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new compound inhibiting chitinase activity, having low toxicity and useful as a insecticide for controlling or exterminating insect pests. SOLUTION: This FO-7314 substance is represented by the formula. The compound is obtained by culturing a microorganism [preferably Clonostachys sp. FO-7314 (FERM P-17200) fungal strains] having ability to produce the compound of the formula in a culture medium, accumulating the compound of the formula in culture products and collecting the compound of the formula from the culture products. The compound of the formula has the following physicochemical properties. Appearance: white powder; melting point: 270 deg.C; molecular weight: 675.3214 (M+H, by high-resolution, high-speed shock mass spectrometry); molecular formula: C29H42N10O9; specific optical rotation [α]D25: +52.1 deg. (c=0.1 in an aqueous solution); ultraviolet absorption spectrum has maximum absorption at 200 nm (ε=31,400) (in an aqueous solution). |
